Device Wellness Page (33H) - Quantum DLT 8000 Product Manual

SCSI Commands
LOG SENSE Command (4Dh) (continued)

5.8.7 Device Wellness Page (33h)

The Device Wellness Page returns information about any check conditions related to Sense
Keys 1, 3, 4, and 9 logged by the tape drive. Up to 16 entries (parameter code 0000h to
000Fh) can be contained in the page; each entry records a check condition (Sense Key =
1), a medium error (Sense Key = 3), or hardware error (Sense Key = 4). Note that
parameter code 000h contains the oldest log information while parameter 000Fh contains
the most recent.
Only head cleaning recovered errors (more serious recovered errors) are recorded when
Sense Key is 1; all sense data are recorded when Sense Key is 3 or 4.
This page begins with a 4-byte header followed by the log parameter blocks.
LOG PAGE HEADER
Bit 7
Byte
1 Reserved
1
(MSB)
2 - 3
Figure 5–27 DEVICE WELLNESS LOG SENSE Header Format
Table 5–30 DEVICE WELLNESS LOG SENSE Header Field Descriptions
Field Name
Page Code
Page Length
5-62
6 5 4
Reserved
Page Length
Description
The Page Code echoes the page code that was specified in the
LOG SENSE command descriptor block.
The Page Length field specifies the number of bytes available and
depends on the parameters requested.
Quantum DLT 8000 Tape System
3 2 1
Page Code (33h)
0
(LSB)